%0 Journal Article
%T Microstructure and Wear Behaviour of Laser-induced Thermite Reaction Al2O3 Ceramic Coating on AA7075 Aluminum Alloy
%A Kaijin HUANG
%A Xin LIN
%A Changsheng XIE
%A TMYue
%A <br>Kaijin
%A HUANG
%A Xin
%A LIN
%A Changsheng
%A XIE
%A T.M.
%A Yue
%J 材料科学技术学报
%D 2007
%I 
%X The microstructure and wear behaviour of the thermite reaction coating produced by the hybrid laser claddingremelting on AA7075 aluminum alloy for the systems of Al-CuO-SiO2, Al-Cr2O3-SiO2, Al-Fe2O3-SiO2, and Al-TiO2-SiO2 were studied. The results of the X-ray diffraction (XRD) analysis show that in all the four reaction coatings, α-Al2O3 and γ-Al2O3 phases were present at the top surface, together with various intermetallic phases, the corresponding reduced metal and Al phase in the fusion zone. Under the dry sliding condition, the wear resistance, in terms of weight loss, of the laser-clad specimens was considerably higher than that of the untreated specimen. The predominant wear mechanism of the former specimens was abrasive wear, while for the latter, it was the adhesive wear that prevailed.
%K Laser cladding
%K Thermite reaction
%K Aluminum alloy
%K Wear<br>铝合金
%K 激光涂覆
%K 铝热剂反应
%K 三氧化二铝陶瓷覆层
%K 显微结构
%K 磨蚀行为
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=84529CA2B2E519AC&jid=324DC3CAB22330DB19158AE0A9B7BFA5&aid=F19A5D4C421BA7F6&yid=A732AF04DDA03BB3&vid=EA389574707BDED3&iid=0B39A22176CE99FB&sid=BC084ACE66B62CC8&eid=9F6DA927E843CD50&journal_id=1005-0302&journal_name=材料科学技术学报&referenced_num=0&reference_num=24